biped n. + Add to list UK //bˈaɪpɛd// biped SynonymsAntonymsEtymology Synonyms bipedaltwo footed Antonyms quadrupedquadrupedalOriginLATbipēs→ENbiped Borrowed from Latin bipēs, bipedis. Alternatively analyzable as bi- + -ped. Idioms1 entry01featherless bipedA human being.